21257586

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{56237}}^1$

素因数の和:56255

約数の個数: 32

約数和(自身を含む): 53988480

約数和(自身を除く): 32730894

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 27, 42, 54, 63, 126, 189, 378, 56237, 112474, 168711, 337422, 393659, 506133, 787318, 1012266, 1180977, 1518399, 2361954, 3036798, 3542931, 7085862, 10628793, 21257586]

約数ペア:

[(1, 21257586), (2, 10628793), (3, 7085862), (6, 3542931), (7, 3036798), (9, 2361954), (14, 1518399), (18, 1180977), (21, 1012266), (27, 787318), (42, 506133), (54, 393659), (63, 337422), (126, 168711), (189, 112474), (378, 56237)]